#include <iostream>
#include <cstdio>
using namespace std;

int N, U, D;
int sum = 0;
int ans = 0;

int main()
{
    cin >> N >> U >> D;
    while (sum < N)
    {
        ans += 1;
        if (ans % 2 != 0)
            sum += U;
        if (ans % 2 == 0)
            sum -= D;
    }
    cout << ans;
}